You select a family with four children. if m represents a male child and f a female child, the set of equally likely outcomes for the children's genders is {, fffm, ffmf, fmff, mfff, mffm, mfmf, mmff, ffmm, fmfm, fmmf, fmmm, mfmm, mmfm, mmmf, }. find the probability of selecting a family with exactly three male children